Sec Form 4 Filing - Alta Partners NextGen Fund I Management, LLC @ Allakos Inc. - 2020-01-22

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Alta Partners NextGen Fund I Management, LLC 2. Issuer Name and Ticker or Trading Symbol Allakos Inc. [ ALLK] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) ONE EMBARCADERO CENTER, SUITE 3700 3. Date of Earliest Transaction (MM/DD/YY) 01/22/2020 (Street) SAN FRANCISCO, CA94111 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 01/22/2020 J( 1 ) 1,000,000 D $ 0 10,519,200 I See Footnote ( 2 ) ( 3 ) ( 4 ) Common Stock 01/22/2020 J( 1 ) 34,615 A $ 0 34,615 I By APNG I Management Common Stock 01/22/2020 J( 5 ) 34,615 D $ 0 0 I By APNG I Management Common Stock 01/22/2020 J( 6 ) 11,538 A $ 0 11,538 D ( 6 ) Common Stock 01/22/2020 J( 7 ) 11,538 A $ 0 11,538 I By Hudson Capital LLC ( 7 ) Common Stock 01/22/2020 J( 8 ) 11,539 A $ 0 11,539 I By Alta Bioequities, L.P. ( 8 ) Common Stock 01/22/2020 J( 9 ) 6,837 A $ 0 6,837 D ( 9 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Alta Partners NextGen Fund I Management, LLC ONE EMBARCADERO CENTER SUITE 3700 SAN FRANCISCO, CA94111 X Alta Partners Management VIII, LLC ONE EMBARCADERO CENTER SUITE 3700 SAN FRANCISCO, CA94111 X Alta Partners NextGen Fund I, L.P. ONE EMBARCADERO CENTER SUITE 3700 SAN FRANCISCO, CA94111 X CHAMPSI FARAH ONE EMBARCADERO CENTER SUITE 3700 SAN FRANCISCO, CA94111 X Hudson Peter A ONE EMBARCADERO CENTER SUITE 3700 SAN FRANCISCO, CA94111 X MORE ROBERT J ONE EMBARCADERO CENTER SUITE 3700 SAN FRANCISCO, CA94111 X NOHRA GUY P ONE EMBARCADERO CENTER SUITE 3700 SAN FRANCISCO, CA94111 X Alta Partners VIII, L.P. ONE EMBARCADERO CENTER SUITE 3700 SAN FRANCISCO, CA94111 X JANNEY DANIEL ONE EMBARCADERO CENTER SUITE 3700 SAN FRANCISCO, CA94111 X X Signatures /s/ Daniel Janney, Managing Director, Alta Partners NextGen Fund I Management, LLC 01/24/2020 Signature of Reporting Person Date /s/ Daniel Janney, Managing Director, Alta Partners Management VIII, LLC 01/24/2020 Signature of Reporting Person Date /s/ Daniel Janney, Managing Director, Alta Partners NextGen Fund I, L.P. 01/24/2020 Signature of Reporting Person Date /s/ Farah Champsi 01/24/2020 Signature of Reporting Person Date /s/ Peter A. Hudson 01/24/2020 Signature of Reporting Person Date /s/ Robert J. More 01/24/2020 Signature of Reporting Person Date /s/ Guy P. Nohra 01/24/2020 Signature of Reporting Person Date /s/ Daniel Janney, Managing Director, Alta Partners VIII, L.P. 01/24/2020 Signature of Reporting Person Date /s/ Daniel Janney 01/24/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents a pro-rata in-kind distribution of Common Stock of the Issuer by Alta Partners NextGen Fund I L.P. ("APNG I"), without consideration, to its general partner and limited partners. ( 2 )Consists of 2,557,377 shares held of record by APNG I and 7,961,823 shares held of record by Alta Partners VIII, L.P. ("Alta VIII"). ( 3 )The shares directly held by Alta VIII are indirectly held by Alta Partners Management VIII, LLC ("Alta Management VIII"), which is the general partner of Alta VIII. The individual managing directors of Alta Management VIII are Farah Champsi, Guy Nohra and Daniel Janney. The managing directors of Alta Management VIII exercise sole voting and investment control with respect to the shares held by Alta VIII. The individual managing directors of Alta Management VIII disclaim beneficial ownership of all shares held by Alta VIII, except to the extent of their respective pecuniary interest s therein. ( 4 )The shares directly held by APNG I are indirectly held by Alta Partners NextGen Fund I Management, LLC ("APNG I Management"), which is the general partner of APNG I. The individual managing directors of APNG I Management are Robert More, Peter Hudson and Daniel Janney. The managing directors of APNG I Management exercise sole voting and investment control with respect to the shares held by APNG I. The individual managing directors of APNG I Management disclaim beneficial ownership of all shares held by APNG I, except to the extent of their respective pecuniary interests therein. ( 5 )Represents a pro-rata in-kind distribution of Common Stock of the Issuer by APNG I Management, without consideration, to its members. ( 6 )Represents the acquisition of the shares of Common Stock of the Issuer by Robert J. More in connection with the pro-rata distribution described in footnote (5) herein. ( 7 )Represents the acquisition of the shares of Common Stock of the Issuer by Hudson Capital, LLC, a limited liability company of which Peter A. Hudson is the managing member, in connection with the pro-rata distribution described in footnote (5) herein. Mr. Hudson disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein. ( 8 )Represents the acquisition of the shares of Common Stock of the Issuer by Alta Bioequities, L.P. in connection with the pro-rata distribution described in footnote (5) herein. Alta Bioequities Management, LLC is the general partner of Alta Bioequities, L.P. and may be deemed to have sole voting and investment power over the shares beneficially owned by Alta Bioequities, L.P. Daniel Janney is the Managing Director of Alta Bioequities Management, LLC. The reporting person disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein. ( 9 )Represents the acquisition of the shares of Common Stock of the Issuer by Guy P. Nohra in connection with the pro-rata distribution described in footnote (1) herein.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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